CVE-2018-9840

Description

The Open Whisper Signal app before 2.23.2 for iOS allows physically proximate attackers to bypass the screen locker feature via certain rapid sequences of actions that include app opening, clicking on cancel, and using the home button.

6.8

CVSS

Severity: Medium

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.06%

Third-Party Advisory en.do Third-Party Advisory github.com Third-Party Advisory github.com

Affected: n/a n/a

References

Link	Tags
https://github.com/signalapp/Signal-iOS/commit/018a35df7b42b4941cb4dfc9f462b37c3fafd9e9	third party advisory patch
https://github.com/signalapp/Signal-iOS/commits/release/2.23.2	issue tracking third party advisory patch
http://nint.en.do/Signal-Bypass-Screen-locker.php	third party advisory broken link

Frequently Asked Questions

What is the severity of CVE-2018-9840?: CVE-2018-9840 has been scored as a medium severity vulnerability.
How to fix CVE-2018-9840?: To fix CVE-2018-9840, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-9840 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2018-9840 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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